[PATCH 08/12] drm/syncobj: add drm_syncobj_query

[Julian Orth <ju.orth@gmail.com>]

This makes the logic from drm_syncobj_query_ioctl available to callers
that already have an array of drm_syncobj.

Signed-off-by: Julian Orth <ju.orth@gmail.com>
---
 drivers/gpu/drm/drm_syncobj.c | 32 +++++++++++++++++++++++++++-----
 include/drm/drm_syncobj.h     |  2 ++
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 948084f56c32..9b7ecc2978f5 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -1773,8 +1773,6 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
 {
 	struct drm_syncobj_timeline_array *args = data;
 	struct drm_syncobj **syncobjs;
-	uint64_t __user *points = u64_to_user_ptr(args->points);
-	uint32_t i;
 	int ret;
 
 	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE))
@@ -1793,7 +1791,31 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
 	if (ret < 0)
 		return ret;
 
-	for (i = 0; i < args->count_handles; i++) {
+	ret = drm_syncobj_query(syncobjs, args->points,
+				args->count_handles, args->flags);
+
+	drm_syncobj_array_free(syncobjs, args->count_handles);
+
+	return ret;
+}
+
+/**
+ * drm_syncobj_query - query timeline points of syncobjs
+ * @syncobjs: array of syncobjs
+ * @user_points: user pointer to array of timeline points
+ * @count: number of syncobjs
+ * @flags: DRM_SYNCOBJ_QUERY_FLAGS_LAST_SUBMITTED or 0
+ *
+ * Queries the timeline point of each syncobj and writes it to @points.
+ */
+int drm_syncobj_query(struct drm_syncobj **syncobjs, u64 user_points,
+		      u32 count, u32 flags)
+{
+	uint64_t __user *points = u64_to_user_ptr(user_points);
+	uint32_t i;
+	int ret = 0;
+
+	for (i = 0; i < count; i++) {
 		struct dma_fence_chain *chain;
 		struct dma_fence *fence;
 		uint64_t point;
@@ -1804,7 +1826,7 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
 			struct dma_fence *iter, *last_signaled =
 				dma_fence_get(fence);
 
-			if (args->flags &
+			if (flags &
 			    DRM_SYNCOBJ_QUERY_FLAGS_LAST_SUBMITTED) {
 				point = fence->seqno;
 			} else {
@@ -1832,7 +1854,7 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
 		if (ret)
 			break;
 	}
-	drm_syncobj_array_free(syncobjs, args->count_handles);
 
 	return ret;
 }
+EXPORT_SYMBOL(drm_syncobj_query);
diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h
index a9216ea07946..da237ca3e61f 100644
--- a/include/drm/drm_syncobj.h
+++ b/include/drm/drm_syncobj.h
@@ -141,6 +141,8 @@ int drm_syncobj_transfer(struct drm_syncobj *src, u64 src_point,
 			 u32 flags);
 int drm_syncobj_timeline_signal(struct drm_syncobj **syncobjs,
 				u64 user_points, u32 count);
+int drm_syncobj_query(struct drm_syncobj **syncobjs, u64 user_points,
+		      u32 count, u32 flags);
 void drm_syncobj_free(struct kref *kref);
 int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags,
 		       struct dma_fence *fence);

-- 
2.54.0